Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4882238 | Die for use in forming lens | Takashi Yoshioka | 1989-11-21 |
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Akira Doi
Overall (1989): #134,868 of 140,708Top 100%
1
Patents 1989